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. F. s. CHURCH. ELEGTRIGRAILWAY TROLLE Y.

No. 517,028. I PatentedMar; 27, 1894.-

lime no STATES- PATENT OFFICE...

FRANK S. CHURCH, OF DETROIT, MICHIGAN, ASSIGN OR OF ONE-HALF TO WILLIAM F. 1 1 EDWARDS, OF SAME PLACE.

ELECTRlC-RAI LWAY TROLLEY.

SPECIFICATION forming part of Letters Patent No. 517,028, dated March 2'7, 1894.

Application filed April 17,1893.

To all whom it may concern.-

Be it known that I, FRANK S. CHURCH, a citizen of the United States, residing at Detroit,-

in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Trolleys, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention consists of a trolley comprising two wheels, so constructed and arranged in relation to each other that they will make the necessary contact with the conductor, and at the same time have portions embracing the conductor above, to prevent the trolley from leaving the wire.

The invention further consists in the peculiar construction, arrangement and combination of the various parts all as more fully hereinafter described.

In the drawings, Figure 1 is a perspective view of my improved trolley showing it in position to be engaged with the conductor wire. Fig. 2 is a side elevation thereof showing it engaged with the conductor. Fig. 3 is a bottom plan view of Fig. 2, and Fig. 4 is a vertical, central section through the trolley wheels.

A is the usual trolley arm supported on the car and extending in proximity to the conductor B.

C is a head-block swiveled at the upper end of the arm A. D are two parallel spring arms secured to said block and extending rearwardly and upwardly. i

E are oppositely inclined sockets formed at the free ends of the spring arms.

F are pivot pins secured in said sockets and Care two wheels journaled upon the pins. These wheels have the beveled face H in which is formed the groove I the beveled faces of the two Wheels contacting at one point in their circumference, as do two bevel gear wheels. The flanges a b which bound the grooves are of different sizes, the inner one preferably being the greater, so that the. complementary inner flanges a meet, while the upper or outer flanges b are separated sufficiently to allow the stems of the hangersc to pass between, but not sufficient to allow the trolley to leave the conductor except by spreading the wheels apart. The spring arms D act with their own tension to go together.

J are spiral springs secured about the ends Serial No. 470,648. (No model.)

adapted to interlock with ribs on the lugs L,

when the lever is in substantially parallel relation to the arms, in which position it is normally held by the spiral spring J. This lever at its upper end carries a grooved wheel 0, and at its lower end a cord P passes down to a position convenient for operation by the car-man.

The parts being thusconstructed, their operation is as follows: To engage the trolley with the conductor, the car-man draws down upon the cord P which will turn the lever M upon its pivot separating the spring arms D and raising the wheel 0 to a position above the top of the trolley. The operator then turns the trolley arm until it is below the conductor and engages with the conductor, when releasing his hold of the string, the springs which press the trolley arm upward will lift the trolley, depress the lever M and engage the trolley upon the conductor. At the same time as the lever M reaches the position shown in Fig. 2 the spring arms D will be free to move toward each other and inclose the conductor wire between the two wheels, as shown in Fig. 4. In this position, the two wheels will make a single rolling contact on the under side of the conductor, while the flanges b will always extend over the upper face of the conductor and prevent the trolley from leaving the track. While I prefer to have these.

arranged in this inclined position is that I 7 am enabled to pass between switches and crossings, substantially as now constructed for the grooved trolley wheel. What I claim as my invention is 1. A trolley formed of two wheels having complementary grooved beveled faces, substantially as described.

2. A trolley formed of two wheels having complementary grooved, beveled faces, the' inner flanges of the groove contacting below the conductor, and the outer flanges approaching each other above the conductor, substantially as described.

3. A trolley formed of two grooved wheels having the flanges on one side of the groove, adapted to contact beneath the conductor, and the other flanges adapted to approach each other above the conductor, substantially to as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK S. CHURCH.

Witnesses:

M. B. ODOGHERTY, N. L. LINDOP. 

